DE69429161T2 - Gerät zur schätzung analog entschiedener werte und eines höchstwahrscheinlichkeitssystems - Google Patents
Gerät zur schätzung analog entschiedener werte und eines höchstwahrscheinlichkeitssystemsInfo
- Publication number
- DE69429161T2 DE69429161T2 DE69429161T DE69429161T DE69429161T2 DE 69429161 T2 DE69429161 T2 DE 69429161T2 DE 69429161 T DE69429161 T DE 69429161T DE 69429161 T DE69429161 T DE 69429161T DE 69429161 T2 DE69429161 T2 DE 69429161T2
- Authority
- DE
- Germany
- Prior art keywords
- metric
- soft decision
- output
- symbol
- estimation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000005540 biological transmission Effects 0.000 claims description 88
- 238000004364 calculation method Methods 0.000 claims description 61
- 230000003044 adaptive effect Effects 0.000 claims description 45
- 238000007476 Maximum Likelihood Methods 0.000 claims description 44
- 230000004044 response Effects 0.000 claims description 36
- 230000021615 conjugation Effects 0.000 claims 1
- 230000015654 memory Effects 0.000 description 89
- 230000014509 gene expression Effects 0.000 description 19
- 238000004422 calculation algorithm Methods 0.000 description 18
- 238000010586 diagram Methods 0.000 description 18
- 238000012545 processing Methods 0.000 description 13
- 238000010295 mobile communication Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 238000012549 training Methods 0.000 description 8
- 238000012937 correction Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 6
- 238000004891 communication Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005094 computer simulation Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 108010076504 Protein Sorting Signals Proteins 0.000 description 1
- 238000005311 autocorrelation function Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03178—Arrangements involving sequence estimation techniques
- H04L25/03312—Arrangements specific to the provision of output signals
- H04L25/03318—Provision of soft decisions
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
- H03M13/39—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
- H03M13/39—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes
- H03M13/41—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using the Viterbi algorithm or Viterbi processors
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/63—Joint error correction and other techniques
- H03M13/6331—Error control coding in combination with equalisation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
- H03M13/23—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using convolutional codes, e.g. unit memory codes
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Probability & Statistics with Applications (AREA)
- Theoretical Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Error Detection And Correction (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29784793 | 1993-11-29 | ||
PCT/JP1994/000386 WO1995015034A1 (fr) | 1993-11-29 | 1994-03-10 | Dispositif d'estimation d'une valeur d'evaluation molle et dispositif d'estimation d'un systeme de vraisemblance maximale |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69429161D1 DE69429161D1 (de) | 2002-01-03 |
DE69429161T2 true DE69429161T2 (de) | 2002-06-20 |
Family
ID=17851925
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69429161T Expired - Lifetime DE69429161T2 (de) | 1993-11-29 | 1994-03-10 | Gerät zur schätzung analog entschiedener werte und eines höchstwahrscheinlichkeitssystems |
Country Status (5)
Country | Link |
---|---|
US (1) | US6302576B1 (sv) |
EP (1) | EP0682414B1 (sv) |
DE (1) | DE69429161T2 (sv) |
FI (1) | FI953461A (sv) |
WO (1) | WO1995015034A1 (sv) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5805637A (en) * | 1995-09-29 | 1998-09-08 | Sony Corporation | Automatic equalizer and digital signal reproducing apparatus carrying the same |
US5905757A (en) * | 1996-10-04 | 1999-05-18 | Motorola, Inc. | Filter co-processor |
ATE210348T1 (de) * | 1997-02-04 | 2001-12-15 | Nokia Networks Oy | Kompensation der dopplerverschiebung in einem mobilkommunikationssystem |
FI102335B (sv) * | 1997-02-28 | 1998-11-13 | Nokia Telecommunications Oy | Mottagningsförfarande och mottagare |
EP0945989A1 (en) * | 1998-03-12 | 1999-09-29 | Hitachi Micro Systems Europe Limited | Viterbi decoding |
JP3230482B2 (ja) * | 1998-03-13 | 2001-11-19 | 日本電気株式会社 | 適応等化器 |
US6185251B1 (en) | 1998-03-27 | 2001-02-06 | Telefonaktiebolaget Lm Ericsson | Equalizer for use in multi-carrier modulation systems |
AU8804698A (en) * | 1998-06-29 | 2000-01-17 | Nokia Networks Oy | Symbol estimation using soft-output algorithm and feedback |
US6529567B1 (en) * | 1999-03-10 | 2003-03-04 | Motorola, Inc. | Electronic apparatus and method for receiving noisy signals |
US6466616B1 (en) * | 1999-07-02 | 2002-10-15 | Telefonaktiebolaget Lm Ericsson (Publ) | Power efficient equalization |
DE19935824A1 (de) * | 1999-07-29 | 2001-02-15 | Siemens Ag | Verfahren zum Erzeugen von Zuverlässigkeitsinformationen für die Kanaldecodierung in einem Funkempfänger sowie entsprechender Funkempfänger |
US6625236B1 (en) | 2000-02-08 | 2003-09-23 | Ericsson Inc. | Methods and systems for decoding symbols by combining matched-filtered samples with hard symbol decisions |
US7058141B1 (en) * | 2000-06-02 | 2006-06-06 | Nec Usa, Inc. | MLSE decoding of PRS type inter-bin interference in receiver-end windowed DMT system |
US6708308B2 (en) * | 2001-01-10 | 2004-03-16 | International Business Machines Corporation | Soft output viterbi algorithm (SOVA) with error filters |
US6823027B2 (en) | 2001-03-05 | 2004-11-23 | Telefonaktiebolaget Lm Ericsson (Publ) | Method for enhancing soft-value information |
US7453933B2 (en) * | 2001-05-04 | 2008-11-18 | Lucent Technologies Inc. | Method of estimating a signal-to-interference+noise ratio (SINR) using data samples |
KR100450949B1 (ko) * | 2001-09-18 | 2004-10-02 | 삼성전자주식회사 | 데이터 통신 시스템에서 채널 복호기 입력 연성 결정 값계산 장치 및 방법 |
US7107514B1 (en) | 2002-08-27 | 2006-09-12 | Marvell International Ltd. | Method and apparatus for detecting Viterbi decoder errors due to quasi-catastophic sequences |
US8144572B2 (en) * | 2004-09-14 | 2012-03-27 | Qualcomm Incorporated | Detection and mitigation of interference and jammers in an OFDM system |
US7965782B1 (en) | 2007-05-11 | 2011-06-21 | Redpine Signals, Inc. | Reduced complexity maximum likelihood decoder for MIMO communications |
JP5299130B2 (ja) * | 2009-07-03 | 2013-09-25 | 富士通セミコンダクター株式会社 | 受信データ処理回路及び受信データ処理切り替え方法 |
JP6859457B2 (ja) * | 2018-01-19 | 2021-04-14 | 日本電信電話株式会社 | シンボル判定装置及びシンボル判定方法 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4571734A (en) * | 1983-08-05 | 1986-02-18 | International Business Machines Corporation | Method and apparatus for decoding the output signal of a partial-response class-IV communication or recording-device channel |
JPS61161027A (ja) * | 1985-01-08 | 1986-07-21 | Mitsubishi Electric Corp | ヴイタビ復号器 |
JPS61230430A (ja) * | 1985-04-04 | 1986-10-14 | Mitsubishi Electric Corp | 加算比較選択回路 |
US5271042A (en) * | 1989-10-13 | 1993-12-14 | Motorola, Inc. | Soft decision decoding with channel equalization |
US5144644A (en) * | 1989-10-13 | 1992-09-01 | Motorola, Inc. | Soft trellis decoding |
GB2238692B (en) * | 1989-11-29 | 1993-12-01 | Technophone Ltd | Data symbol estimation |
JP2614524B2 (ja) * | 1990-03-02 | 1997-05-28 | 国際電信電話株式会社 | 誤り訂正符号の復号方法 |
DE69129768T2 (de) * | 1990-03-30 | 1999-02-25 | Nec Corp., Tokio/Tokyo | Störungsunempfindlicher Raumdiversityempfänger |
GB2246272B (en) * | 1990-07-19 | 1994-09-14 | Technophone Ltd | Maximum likelihood sequence detector |
US5134635A (en) | 1990-07-30 | 1992-07-28 | Motorola, Inc. | Convolutional decoder using soft-decision decoding with channel state information |
US5142551A (en) * | 1991-02-28 | 1992-08-25 | Motorola, Inc. | Signal weighting system for digital receiver |
US5214675A (en) * | 1991-07-02 | 1993-05-25 | Motorola, Inc. | System and method for calculating channel gain and noise variance of a communication channel |
US5414738A (en) * | 1993-11-09 | 1995-05-09 | Motorola, Inc. | Maximum likelihood paths comparison decoder |
US5471500A (en) * | 1994-03-08 | 1995-11-28 | At&T Ipm Corp. | Soft symbol decoding |
-
1994
- 1994-03-10 US US08/495,456 patent/US6302576B1/en not_active Expired - Lifetime
- 1994-03-10 DE DE69429161T patent/DE69429161T2/de not_active Expired - Lifetime
- 1994-03-10 EP EP94909296A patent/EP0682414B1/en not_active Expired - Lifetime
- 1994-03-10 WO PCT/JP1994/000386 patent/WO1995015034A1/ja active IP Right Grant
-
1995
- 1995-07-18 FI FI953461A patent/FI953461A/sv unknown
Also Published As
Publication number | Publication date |
---|---|
US6302576B1 (en) | 2001-10-16 |
DE69429161D1 (de) | 2002-01-03 |
EP0682414A1 (en) | 1995-11-15 |
EP0682414A4 (en) | 1997-02-26 |
FI953461A0 (sv) | 1995-07-18 |
WO1995015034A1 (fr) | 1995-06-01 |
EP0682414B1 (en) | 2001-11-21 |
FI953461A (sv) | 1995-09-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: CANON KABUSHIKI KAISHA, TOKIO/TOKYO, JP |
|
8328 | Change in the person/name/address of the agent |
Representative=s name: BETTEN & RESCH, 80333 MUENCHEN |